STRINGSTRING
STRING protein interaction network
Nodes:
Network nodes represent proteins
splice isoforms or post-translational modifications are collapsed, i.e. each node represents all the proteins produced by a single, protein-coding gene locus.
Node Color
colored nodes:
query proteins and first shell of interactors
white nodes:
second shell of interactors
Node Content
empty nodes:
proteins of unknown 3D structure
filled nodes:
a 3D structure is known or predicted
Edges:
Edges represent protein-protein associations
associations are meant to be specific and meaningful, i.e. proteins jointly contribute to a shared function; this does not necessarily mean they are physically binding to each other.
Known Interactions
from curated databases
experimentally determined
Predicted Interactions
gene neighborhood
gene fusions
gene co-occurrence
Others
textmining
co-expression
protein homology
Your Input:
Neighborhood
Gene Fusion
Cooccurrence
Coexpression
Experiments
Databases
Textmining
[Homology]
Score
comCCompetence stimulating peptide precursor (CSP); Acts as a pheromone, induces cells to develop competence for genetic transformation; Belongs to the ComC family. (41 aa)    
Predicted Functional Partners:
comD
Histidine protein kinase; Required for induction of competence.
  
 
 0.999
comE
Response regulator; Required for induction of competence.
     
 0.985
rpsL
30S Ribosomal protein S12; With S4 and S5 plays an important role in translational accuracy.
   
  
 0.731
smf
DNA processing Smf protein; Protein that helps load RecA onto ssDNA during transformation. Required for DNA transformation. Not required for DNA uptake but for a later stage of transformation. Thought to interact at the cell pole with newly imported transforming ssDNA which it binds cooperatively, protecting linear and circular ssDNA from nuclease action. Forms bridges between DNA segments. Favors the loading of RecA onto ssDNA and formation of RecA-DNA filaments, triggering RecA- catalysis of ATP-driven homologous DNA pairing. Belongs to the DprA/Smf family.
      
 0.725
ply
Pneumolysin (sulfhydryl-activated toxin that lyses cholesterol containing membranes); Sulfhydryl-activated toxin that causes cytolysis by forming pores in cholesterol containing host membranes. After binding to target membranes, the protein undergoes a major conformation change, leading to its insertion in the host membrane and formation of an oligomeric pore complex. Cholesterol may be required for binding to host membranes, membrane insertion and pore formation. Can be reversibly inactivated by oxidation (By similarity).
   
  
 0.724
cbpD
Choline binding protein D.
      
 0.723
ssbB
Single-stranded DNA-binding protein; Plays an important role in DNA replication, recombination and repair. Binds to ssDNA and to an array of partner proteins to recruit them to their sites of action during DNA metabolism.
   
  
 0.722
luxS
Autoinducer-2 production protein; Involved in the synthesis of autoinducer 2 (AI-2) which is secreted by bacteria and is used to communicate both the cell density and the metabolic potential of the environment. The regulation of gene expression in response to changes in cell density is called quorum sensing. Catalyzes the transformation of S-ribosylhomocysteine (RHC) to homocysteine (HC) and 4,5-dihydroxy-2,3-pentadione (DPD) (By similarity); Belongs to the LuxS family.
      
 0.720
comB
Transport protein ComB; Required for induction of competence; Belongs to the membrane fusion protein (MFP) (TC 8.A.1) family.
      
 0.634
ABC-MSP
ABC transporter membrane-spanning permease - sugar transport.
      
 0.600
Your Current Organism:
Streptococcus pneumoniae
NCBI taxonomy Id: 171101
Other names: S. pneumoniae R6, Streptococcus pneumoniae (strain ATCC BAA-255 / R6), Streptococcus pneumoniae R6, Streptococcus pneumoniae str. R6
Server load: low (8%) [HD]
STRING is a Core Data Resource as designated by Global Biodata Coalition and ELIXIR.